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YB1220
Dual Channel 200mA LDO Regulator
Description
The YB1220 family is a dual-channel LDO product
consisting of 2 independent low noise, low dropout
(LDO), linear regulators especially designed for
battery-powered equipment and portable device.
The regulator achieves a low 300 mV dropout at
200mA 3.3V output and good PSRR of near 50dB
at 1K~10KHz frequency.
The YB1220 consumes only 80uA supply current
with both regulators enabled and supports different
output voltages of full range from 1.2 to 3.6V
(pre-set).
The YB1220 is smartly designed to fit in three
different pin allocations of SOT23-6 package which
offers higher flexibility to users’ PCB layout.
Other features of YB1220 include a thermal
shutdown circuit and an output short-circuit
protection.
Features
High Accuracy Output Voltage : + 2%
Wide Output Voltage Range : 1.2~3.6V
Each Channel Typical Current : 200mA
Max. Allowable 300mA Each Channel
Low Quiescent Current : ~80uA
Dual Enable Pins Control
300mV Dropout at 200mA 3.3V Output
Stable with 1.0uF Ceramic Capacitor
Thermal Protection Shutdown
Output Short-Circuit Current Limit
Built-In Internal Soft-Start
Green Package (RoHS) Available
Applications
Cellular Phone
White LED Backlighting
PDA, Notebook, PC
Digital Camera
Portable Application
Wireless LAN
Battery-Powered Equipment
Typical Application Circuitry
YB1220 MRev.1.1
www.yobon.com.tw
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Pin Configuration
YB1220
Dual Channel 200mA LDO Regulator
Pin Description
Table 1
Pin Name
1 EN1
2 GND
3 EN2
4 VO2
5 VIN
6 VO1
SOT-26M Description
Pull High to Enable Output VO1
Ground Pin
Pull High to Enable Output VO2
Regulated Output Voltage 2
Unregulated Input Supply
Regulated Output Voltage 1
Pin Name
SOT-26T Description
1 EN1 Pull High to Enable Output VO1
2 VIN Unregulated Input Supply
3 EN2 Pull High to Enable Output VO2
4 VO2 Regulated Output Voltage 2
5 GND Ground Pin
6 VO1 Regulated Output Voltage 1
Pin Name
SOT-26R Description
1 VO1 Regulated Output Voltage 1
2 GND Ground Pin
3 EN1 Pull High to Enable Output VO1
4 EN2 Pull High to Enable Output VO2
5 VIN Unregulated Input Supply
6 VO2 Regulated Output Voltage 2
YB1220 MRev.1.1
www.yobon.com.tw
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Ordering Information
YB1220
Dual Channel 200mA LDO Regulator
Marking Information
Absolute Maximum Ratings
Supply Voltage ................................................ -0.3V to 7.0V
Output Voltage ....................................... -0.3V to (VIN+0.3V)
Output Short-Circuit Duration.....................................Infinite
Junction Temperature Range ...................................+150
Storage Temperature Range..................... -65to +150
Lead Temperature ....................................................+250
Recommended Operating Conditions
Input Supply Voltage........................ 2V to 6.0V
Operating Temperature ..............-40to +85
ESD Susceptibility (HBM)...........................................2KV
ESD Susceptibility (MM)........................................... 200V
Thermal Resistance (SOT-26, θJC) ....................140/W
Thermal Resistance (SOT-26, θJA) ....................250/W
Internal Power Dissipation (SOT-26, PD).................. 0.4W
YB1220 MRev.1.1
www.yobon.com.tw
3